Question

7. For solving the quadratic equation x2 + 8x = - 15
by 'completing square method', find the third
term. answer should be 16.​

Answer 1

$x {}^{2} + 8x = - 15 \\ = > x {}^{2} + 8x + 15 = 0 \\ = > x {}^{2} + 5x + 3x + 15 = 0 \\ = > x(x + 5) + 3(x + 5) = 0 \\ = > (x + 5)(x + 3) = 0 \\ = > x + 5 = 0 \\ = > x = - 5 \\ or \\ = > x + 3 = 0 \\ = > x = -$

I hope that helps you

Answer 2

Answer:

Hope this answer will be helpful for you.❤❤❤❤❤❤